Analysis Overview
SHA256
fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e
Threat Level: Known bad
The file fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Executes dropped EXE
Drops file in System32 directory
Unsigned PE
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of SendNotifyMessage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-18 22:07
Signatures
Quasar family
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-18 22:07
Reported
2024-08-18 22:10
Platform
win7-20240704-en
Max time kernel
132s
Max time network
148s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\Windows\Windows Host Process.exe | C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows\Windows Host Process.exe | C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows | C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows\Windows Host Process.exe | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe
"C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Windows Host Process" /sc ONLOGON /tr "C:\Windows\system32\Windows\Windows Host Process.exe" /rl HIGHEST /f
C:\Windows\system32\Windows\Windows Host Process.exe
"C:\Windows\system32\Windows\Windows Host Process.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Windows Host Process" /sc ONLOGON /tr "C:\Windows\system32\Windows\Windows Host Process.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 147.185.221.22:6712 | tcp | |
| US | 147.185.221.22:6712 | tcp | |
| US | 147.185.221.22:6712 | tcp | |
| US | 147.185.221.22:6712 | tcp | |
| US | 147.185.221.22:6712 | tcp | |
| US | 147.185.221.22:6712 | tcp |
Files
memory/1072-0-0x000007FEF5583000-0x000007FEF5584000-memory.dmp
memory/1072-1-0x0000000000D60000-0x00000000010B8000-memory.dmp
memory/1072-2-0x000007FEF5580000-0x000007FEF5F6C000-memory.dmp
C:\Windows\System32\Windows\Windows Host Process.exe
| MD5 | 7021b44ffa619a2a286dd9bd55d1e321 |
| SHA1 | de69ec28f445e6c47b1d2f4440465f3ffc2df174 |
| SHA256 | fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e |
| SHA512 | 546909a07d8e229c0510c249c4b31c78d699a31130e9933ecc03cc2a1b4a7778bbcb872668aab8575050fe4b6c72715164f290a368dd6471e1c492393cf04f13 |
memory/2804-8-0x000007FEF5580000-0x000007FEF5F6C000-memory.dmp
memory/2804-9-0x0000000000B20000-0x0000000000E78000-memory.dmp
memory/1072-10-0x000007FEF5580000-0x000007FEF5F6C000-memory.dmp
memory/2804-11-0x000007FEF5580000-0x000007FEF5F6C000-memory.dmp
memory/2804-12-0x000007FEF5580000-0x000007FEF5F6C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-18 22:07
Reported
2024-08-18 22:09
Platform
win10v2004-20240802-en
Max time kernel
141s
Max time network
143s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system32\Windows\Windows Host Process.exe | C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows | C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows\Windows Host Process.exe | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
| File created | C:\Windows\system32\Windows\Windows Host Process.exe | C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\Windows Host Process.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe
"C:\Users\Admin\AppData\Local\Temp\fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows Host Process" /sc ONLOGON /tr "C:\Windows\system32\Windows\Windows Host Process.exe" /rl HIGHEST /f
C:\Windows\system32\Windows\Windows Host Process.exe
"C:\Windows\system32\Windows\Windows Host Process.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows Host Process" /sc ONLOGON /tr "C:\Windows\system32\Windows\Windows Host Process.exe" /rl HIGHEST /f
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4280,i,10065386245627775856,6567048529106473151,262144 --variations-seed-version --mojo-platform-channel-handle=1044 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 147.185.221.22:6712 | tcp | |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 13.107.21.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 147.185.221.22:6712 | tcp | |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 147.185.221.22:6712 | tcp | |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.140.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 147.185.221.22:6712 | tcp | |
| US | 147.185.221.22:6712 | tcp | |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 147.185.221.22:6712 | tcp |
Files
memory/1956-0-0x00007FFAABA03000-0x00007FFAABA05000-memory.dmp
memory/1956-1-0x00000000008D0000-0x0000000000C28000-memory.dmp
memory/1956-2-0x00007FFAABA00000-0x00007FFAAC4C1000-memory.dmp
C:\Windows\System32\Windows\Windows Host Process.exe
| MD5 | 7021b44ffa619a2a286dd9bd55d1e321 |
| SHA1 | de69ec28f445e6c47b1d2f4440465f3ffc2df174 |
| SHA256 | fd96603f9b5aa63021f7bbf8cb6aa320154b43f53c62ddeb011a395327c6093e |
| SHA512 | 546909a07d8e229c0510c249c4b31c78d699a31130e9933ecc03cc2a1b4a7778bbcb872668aab8575050fe4b6c72715164f290a368dd6471e1c492393cf04f13 |
memory/2320-9-0x00007FFAABA00000-0x00007FFAAC4C1000-memory.dmp
memory/1956-10-0x00007FFAABA00000-0x00007FFAAC4C1000-memory.dmp
memory/2320-11-0x00007FFAABA00000-0x00007FFAAC4C1000-memory.dmp
memory/2320-12-0x000000001BC10000-0x000000001BC60000-memory.dmp
memory/2320-13-0x000000001BD20000-0x000000001BDD2000-memory.dmp
memory/2320-14-0x00007FFAABA00000-0x00007FFAAC4C1000-memory.dmp